One-year clinical evaluation of e.max CAD and LavaTM ultimate laminate veneers with butt joint preparation (Randomized controlled clinical trial)

Purpose: The aim of this clinical study was to evaluate ceramic laminate veneers constructed from Lithium disilicate (IPS e.max CAD), and resin nano-ceramic (Lava UltimateTM CAD/CAM) according to the modified United States of Public Health Service (USPHS) criteria over 12 months. Materials and methods: Twenty-eight ceramic laminate veneers (fourteen for each group) were placed in the Fixed Prosthodontics Department clinics, Faculty of Dentistry, Cairo University by one operator. The restorations were made using CEREC premium 4.4 CAD/CAM software with IPS e.max CAD and Lava UltimateTM CAD/CAM blocks. Modified USPHS criteria were used to evaluate the clinical performance of the restorations. Patient satisfaction were assessed using visual analogue scale. Fisher’s Exact test was used to compare between the two groups. Friedman’s test was used to study the changes by time in each group. Patient satisfaction scores (VAS scores) were presented as median and range values. Results: Regrading marginal adaptation, retention, and fracture, through the whole study period; all restorations in the two groups showed (Alpha) scores. While for marginal discoloration, all surfaces of restorations in the two groups showed (Alpha) scores till 6 months. While after 8, 10 and 12 months; the palatal surface of Lava Ultimate group showed (Bravo) scores. However, there was no statistically significant difference between the two groups after 12 months (P-value = 0.481). The overall satisfaction of restorations was very satisfied by 85.7% and satisfied by 14.3%. Conclusion: Both IPS e.max CAD and Lava Ultimate laminate veneers revealed high successful clinical performance over a period of 12 months follow up. *Correspondence to: Mai M ElGendi, Dentist at ministry of health, Cairo, Egypt, E-mail: mai.eltohami@dentistry.cu.edu.eg